党必须始终紧紧抓住发展这个执政兴国的第一要务。
参考答案：对
The officer insisted that Michael did not follow the correct ________ in applying for a visa. (2012·湖北，30)
A．pattern
B．procedure
C．program
D．perspective
乳突根治术随着耳显微外科技术的迅速发展出现了哪些改良?
